How can I block Playstation online?

[#1]

19 Year old children who don't listen don't get to play. So how can I block the site?

[#2]

Go To:  192.168.1.1   ..... type this in your browser

Sign in to your Router...Make sure they cannot sign in to your Router...change Password...Then

Go To : Parental Control...take it from there.

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 PS: Here is a good Ref for you Re Passwords.

https://www.grc.com/haystack.htm